Magnum heads on an LA enigine

Hundreds, if not thousands of people have done this swap. I did it last summer on my '73 360. There is info all over this forum and all over the web about it. They are a little better in that they have closed chambers and the exhaust port flows much better than the old LA heads. The closed chambers will up your compression, which you will definitely feel. Do some searching around; "magnum head swap" .